Laravel 5.3 Check if result exist

I'm having trouble getting this thing to work. Basically this function is called once I click the delete button of an user config. Users can have multiple configs. What happens is that once I delete a config it looks for another one, if found it sets that as the current profile. If not it should set the config_done back to 0. the first bit works fine but if $firstProfile returns nothing, instead of entering the else it returns me an error..

code:

public function delete(UserConfig $config) {
    $user = Auth::user();
    $uid = $user->id;

    if ($uid == $config->user_id) {

      UserConfig::where('id', $config->id)->delete();

      $firstProfile = UserConfig::where('user_id', $uid)->first()->id;

      if(count($firstProfile)){
        $user = User::find($uid);
        $user->current_profile = $firstProfile;
        $user->save();

        return view('/settings');
      } else {
        $user = User::find($uid);
        $user->config_done = 0;
        $user->save();

        return view('/home');
      }
    }
  }

error:

ErrorException in UserConfigController.php line 100:
Trying to get property of non-object
in UserConfigController.php line 100
at HandleExceptions->handleError('8', 'Trying to get property of non-object', '/Users/jordykoppen/git/beef-monitor/app/Http/Controllers/UserConfigController.php', '100', array('config' => object(UserConfig), 'user' => object(User), 'uid' => '1')) in UserConfigController.php line 100

Keep in mind that I'm very new to Laravel and the whole MVC environment.

via Chebli Mohamed